Walthers Cornerstone Steel Railroad Bridge Towers are just the thing for constructing impressive steel viaducts on your layout. This kit includes parts for a tower used for supporting deck girder bridges of varying lengths. Bridge Towers are easily cut to different heights. Add realism to your HO railroad with the Cornerstone Engineered Bridge System! Part of the Cornerstone Engineered Bridge System. Common prototype design used with various types of bridges Fits steam, diesel and modern-eras Highly detailed parts Easily cut to three different heights Two sizes of concrete pedestals included Use with Cornerstone Standard 30′, 50′ and 70′ Deck Girder Bridges (each sold separately) to model a continuous viaduct Assembled model measures: Length: 4-7/16 11.3cm Width at Base: 4-1/2′ 11.4cm Width at Top: 1-13/64′ 3cm Height: 10′ 25.4cm Footings Large: 29/32′ 2.5cm Tall Small: 1/2′ 1.5cm Tall Photo shows a typical viaduct modeled with Steel Railroad Bridge Tower Bent 2-Pack (#933-4555), 30′ Standard Level Single-Track Railroad Deck Girder Bridge (#933-4505) and 70′ Standard Level Single-Track Railroad Deck Girder Bridge (#933-4507), each sold separately: Single-Track Railroad Deck Girder Bridge Kits 30′ Standard Level 50′ 70′ 90′ 30′ Low Level Steel Railroad Bridge Tower Steel Railroad Bridge Tower Bent 2-Pack